F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
341/38.1
F02D 41/02 (2006.01) G05D 1/08 (2006.01)
Patent
CA 2017151
The speed 54,56 of the free turbine 40 of a helicopter engine 22 is compared 134,188 with the speed 142,140 of the helicopter rotor 10 to indicate 106,108 a specific magnitude of autorotatian and the deceleration 150 of the rotor above either one of two threshold magnitudes 220,222 (dependent on the magnitude of autorotation) is utilized 81,68,69 to increase fuel flow 72 to the engine according to a specific schedule 160,162, determined by the type of autorotation, in anticipation of rotor speed droop which would otherwise occur during recovery from the autorotation maneuver.
Greenberg Charles E.
Lappos Nicholas D.
Meisner Richard P.
Sweet David H.
Walsh David M.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
United Technologies Corporation
LandOfFree
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